September in Baykalovsk is the rainiest month of the year. In September, the weather in Baykalovsk is typically cold. Average daily high temperature in September is about 5 degrees above zero. On average, Baykalovsk has 19 rainy, 9 cloudy, and 2 sunny days in September. The rains are usually light. September as well as January, February, March, and August is considered the most uncomfortable time to visit Baykalovsk.